Alpha 21066A Microprocessor Evaluation Board (EB66+) User's Guide

This User's Guide describes the Alpha 21066A Microprocessor Evaluation Board (EB66+), a single-board platform designed for the evaluation and development of computing systems based on the Alpha 21066A microprocessor.

The document details the board's features, configuration, and functional operation. Key components include:

• The Alpha 21066A microprocessor (up to 233 MHz) with integrated PCI bus interface and memory controller.
• ECC-protected 64-bit DRAM main memory (8 MB to 384 MB).
• A 1 MB onboard external backup cache (Bcache), configurable to smaller sizes via jumpers.
• A Serial Boot ROM (SROM) for initialization and a Flash ROM for debugging and operating system support.
• PCI local bus interface with four expansion slots.
• An Intel 82378ZB PCI-to-ISA bridge (SIO), providing an ISA (IEEE-P996) interface with five expansion slots.
• Integrated peripheral support including IDE, serial and parallel ports, diskette drive controller, keyboard/mouse controller, and a Time-of-Year clock.
• Programmable Array Logic (PAL) devices for interrupt control.

The guide explains system configuration (jumpers, connectors, DRAM), address mapping, I/O subsystem details, system clocks, reset/initialization procedures, and physical characteristics. It also outlines its uses for system and software development and memory evaluation, and provides power and environmental requirements, technical support information, and a comprehensive address map and SROM initialization details.